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早期研究发现,对药物过敏患者血浆中前白蛋白(PA)缺乏或其水平明显偏低,而PA结合淋巴细胞,即抗原结合细胞的比例升高。此外在这些患者的淋巴细胞洗脱液中存在PA。这些发现显示PA除具有其它一些功能外,尚可结合半抗原。本文作者用~3H-TdR掺入淋巴细胞转化试验(LTT)法研究了3例确诊及63例怀疑对磺胺二甲嘧啶(SA)过敏患者单用SA、PA-SA复合物及白蛋白-SA复合物的反应。
Early studies found that patients with drug-allergic plasma albumin (PA) deficiency or its level was significantly lower, and PA-bound lymphocytes, the proportion of antigen-binding cells increased. In addition, PA is present in lymphocytes in these patients. These findings show that PA can bind to haptens in addition to other functions. In this study, we used 3-TdR incorporation into lymphocyte transformation assay (LTT) to investigate the association between SA and PA-SA complex and albumin-SA in 3 confirmed and 63 suspected patients with hypersensitivity to sulfamethazine (SA) Complex reaction.